garrett



F. GARRETT, 1a., AND HE-K: PRATT. SAFETY CONTROLLING GEAR FOR ELEcTfiw'ALLY PROPELLED VEHICLES.

APPLICATION FILED JUNE-1B. I9?- Patented Nov. 25,- 1919.

2 SHEETS-SHEET l.

m .l r W E M W /MW F wm m U MM. n m J E 3 F. GARRETT, 1a., AND H. K.-PRATT. I SAFETY CONTROLLING GEAR FOR ELECTRICALLY PROPELLED VEHICLES.

APPLICATION FILED JUNE 18. 1911.

1,323,179. Patented Nov. 25, 1919.-

2 SH EETS-SHEET 2.

this gear through link' 1 is as follows:

UNITED S TES PATEN FRANK GARRETT, .13., AND HARRY iiEAY rnnr'r, or Lnis'ron, ENGLAND, nssic vons TQ RICHARD GARRETT &-SONS LIMITED, OF NEW HAVEN, ENGLAND.

SAFETYCONTROLLINGLGEAR r03 nLncTnIcnLLY-rnorELLnn vnnIcrn's.

To-all whom it may concern: 7 Be it known that we, FRANK GARRETT, J r., and Henry KEAY PRATT, subjects of the King of Great Britain, managing director of Richard Garrett & Sons Limited, of New Haven, Leiston, Suffolk, England, engi-v neers, and of Chalfonts, Waterloo avenue, engineer, Leiston aforesaid, respectively, have invented certain new and useful Improvements in SafetyControlling-Gears for Electrically-Propelled Vehicles, of which the following is a specification.

This invention relates to safety controlling gear for electrically propelled vehicles and has for its primary object to provide a device which will prevent the driver from starting the vehicle or damaging the battery or motor, with the'brakeor brakes applied. y

A safety controlling gear made in ac cordance with this invention comprises means whereby directly a brake is being applied the controller shaft is disconnected and the controller is caused to return automatically to the neutral position.

The means for automatically releasing.

the controller may consist oflevers fitted to the brake lever or levers and adapted to disconnect a clutch on the controllenshaft and allow the spring actuated controller drum to return to the neutral position;

The invention will now be described with reference to the accompanying drawings which show detail views of one form of controlling gears made in accordance with this invention Figure 1 is aside, elevation, Fig. 2 is a front elevation, Fig. 3 is a plan, Fig. 4 is a plan of the de-clutching lever, Fig. '5 is a sectional elevation of the clutch, 'Fig. 6 is an elevation of the controller'levers' and Fig. 7 is a plan of same.

20 and 23 are the foot brake and hand brake levers respectively; 3 is a specially designed lever pivoted at A to the bar 2, to one end of which the link 1 is fixed, the other end being provided with a cam shaped face as shown in the drawing. The link 1 receives its motion from either hand or foot brake lever in one direction in opposition to pull of spring 32, which returns lever 3 to its original position when the brake levers the lever 3 around its fulcrum A, wh1le the cam shaped face of the other end'of lever 3 are released. 7

The means adopted in order to actuaIte n Specification of Letters Patent.

the case OfthffOOt lever,"a smalltongue Pi 12 vh h p liates in the slot provided In link en g een'd of the 'slot,'and

draws the link in af'direction in opposition Patented Nov.]25 1919. Application filed lune 18,1917. serial to: 175,484.

allows either brake leverto',loe'operated en tirely independently.

' One end of leverfl3, which is provided with a cam shapedface, engages with a roller .27 mounted on a 'lever 4 'This lever is keyed to one end of 'a shaft 26, and to the otherend asecond lever 5. is keyed. i Lever 5 is forked'at one'end to receive a cod'piece 30, which engages with the half clutch 7. Thishalf clutch is arranged to slide on the square portion of the spindle 28 against the action of spring 8 while the other. half clutch 6 is keyed rigidly 'tof the controller On tothe controller shaft are threaded arrow C beyond the stop19. Springs 16 and 17 are provided, which act againstfth'e movement of these levers.

three levers, 13, 14. and-1'5. "18'and14 are 'loose on the": shaft, while 15 is keyed securely thereto. Through the end of lever 15 a "pin When thefha'nd1e'21 is turned 111* either I direction, the motion i'stransmitted through 7 the pillar 22 and the bevelw'heels9 and .10.

and clutch cane-rm the ontro11er-dram. Thecontrolle'r drum may'rotate in the di rection of either C or D, and will carry one of the levers 13or 14 with it, depending upon the direction of rotation, thus put ting tension on one or other-of the springs 16 or 17, the rotation in one direction being for forward traveling, and in the other for backward traveling of vehicles.

On depressing the foot brake lever '20, I

or pulling the handbrake lever 23, the link l is pulled in a directionin opposition tothe action of the spring '32, which swings throws the half clutch 7 out of gear with the other half 6. This releases the controller'drum which is returnedto the neu tral position by one of the springs 16 or 17 until the lever 13 or lever 14 comes into contact with the stop 19, and is thus prevented from further turning. The controller drum 18 remains in this, position, i. 6., the neutral position, and the motor is thus automati cally switched out of circuit.

' The brakes must be released before the motor can be started again; and the handle 21 must be placed into neutral position carrying the half clutch 7 with it, when the tion, the clutch will not fall into gear with the controller.

lVith a safety controlling gear made in accordance with this invention, the driver is prevented from starting the vehicle with the brakes on. Any damage is prevented from being done to the battery or motor through attempting to start with the brakes applied. The controlling handle must be returned to the neutral position after either brake has been applied, before the vehicle can be started again, and the brakes must be released before it is possible to operate the controller.

What we claim is 1. Control means for vehicles comprising a controller for the motive agent, means for setting. the controller, brake applying means, andmeans controlled by the brake means for rendering the controller inoperative relatively to its setting means while the brake means isin brake-applying position.

2. Control means for vehicles comprising a controller for the motive agent, said controller having means for setting it in running position, means acting to restore the controller tonon-running position, brake- V applying means, and means governed by the brake-applying means and operative to render the setting means inactive relatively to'the controller. and to render active said restoring means and thus cause the controller to be restored to non-running position when saidbrakeipplying means is set in brake-applying position.

3. Control means for vehicles. comprising a controller for the motive agent, means acting to restore the controller to non-running condition, means for actuating the controller, brake applying means, and means governed by the brake-applying means for connecting and disconnecting said actuating means with respect to the controller. Y

4. Controlmeans for vehicles comprising a controller for the motive agent, means acting to restore the controller to nonrunning conditiom means for actuating the controller, brake-applying means, and means including a clutch controlled by thebrakeapplying means for connecting and disconnecting said actuating means with respect to the controller.

5. Controlling means for electricallypropelled vehicles of the type having a controller for the motive power and a brake member for setting the brakes thereof, comprising means tending to restore the controller to non-running position, means adapted to be operatively connected to the controller for setting the controller inninning position, and means controlled according to the position of the brake member for governing the operative connection between'the controller and said settmg means. a

' 6QControlfmeans for electrically propelled vehicles comprising a controller for the motive current, said controller having actuating means therefor and also means always acting to restore it to non-running condition,brake-applying means, and means including a clutch governed by the brakeapplyingmeans for connecting and dis connecting said actuating means with respect'to the controller. I I I In testimony whereof we have hereunto set our hands in presence of two subscrib-i ing witnesses. V i i FRANK GARRETT, .JR. HARRY KEAY PRATT. Witnesses:

REGINALD C. WEAVER, FREDK. WM. SMITH. 

